Chester Morris
— Boston Blackie
Adele Mara
— Eve Sanders
Richard Lane
— Inspector Farraday
George E. Stone
— The Runt
Lloyd Corrigan
— Arthur Manleder
Walter Sande
— Detective Mathews
Larry Parks
— Joe Trilby
George McKay
— Roggi McKay
Cy Kendall
— Jumbo Madigan
Paul Fix
— Steve Caveroni
Ben Taggart
— Warden
Ernie Adams
— Pop - Stage Doorman (uncredited)
Lloyd Bridges
— Bus Driver (uncredited)
Edmund Cobb
— Police Dispatcher Sergeant (uncredited)
Harry Depp
— Mr. Jones - Hotel Desk Clerk (uncredited)
Mike Donovan
— Policeman (uncredited)
Lester Dorr
— Henry - Desk Clerk (uncredited)
Bud Geary
— Policeman (uncredited)
Kit Guard
— Taxi Driver (uncredited)
Dave Harper
— Policeman (uncredited)
Al Herman
— Guard (uncredited)
George Hickman
— Elevator Boy (uncredited)
Dick Jensen
— Martin - Driver of Squad Car 29 (uncredited)
William Lally
— Policeman (uncredited)
Eddie Laughton
— Ambulance Driver (uncredited)
James T. Mack
— Bill - Manleder's Valet (uncredited)
Teddy Mangean
— Singing Telegram Boy #1 (uncredited)
Sidney Miller
— Herman - Bellhop (uncredited)
Eileen O'Hearn
— Hotel Maid (uncredited)
Lee Prather
— Guard Counting Guests (uncredited)